Fix Rubocop offenses

Author: sedx

spec/features/swagger_spec.rb

@@ -23,9 +23,9 @@
         visit '/swagger'
       end
       it 'adds headers' do
-        headers = page.evaluate_script("swaggerUi.api.clientAuthorizations")["authz"]
-        expect(headers.select { |key, value| key.to_s.match(/^header/)}).not_to be_blank
-        expect(headers.fetch("header_0",{}).fetch('name',{})).to eq GrapeSwaggerRails.options.headers.keys.first
+        headers = page.evaluate_script('swaggerUi.api.clientAuthorizations')['authz']
+        expect(headers.select { |key| key.to_s.match(/^header/) }).not_to be_blank
+        expect(headers.fetch('header_0', {}).fetch('name', {})).to eq GrapeSwaggerRails.options.headers.keys.first
         find('#endpointListTogger_headers', visible: true).click
         first('a[href="#!/headers/GET_api_headers_format"]', visible: true).click
         click_button 'Try it out!'